试题与答案

矿车需要润滑的部分主要是车轮的()。 A.滑动轴承 B.滚动轴承 C.车轴 D.轮缘

题型:单项选择题

题目:

矿车需要润滑的部分主要是车轮的()。

A.滑动轴承

B.滚动轴承

C.车轴

D.轮缘

答案:

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